MOUNTAIN WEATHER FORECAST

Stevens Pass Mountain Weather Forecast

Day and Time: Tuesday 0630

Current Observations:

24hr Precipitation: 0

Temperature profile: 15base, 11ridge

Pass level winds: light and out of the east

Barometer: 1010mb’s and falling

Sky: Partly cloudy with pass level fog

Radar: Dry throughout the State

The Forecast: Today will be cold with a few light snow flurries possible between the sun breaks.

Long Range: The weather will remain relatively dry with cold temperatures and a few light passing snow showers for the remainder of the week.

  

The Science: Most of the activity is to the south and east of Stevens Pass, rotating around a low pressure trough developing off of the Oregon Coast.  This will be the pattern as the axis of the low retrogrades north and settles over Western Washington.  Unfortunately, this is little energy to tap into and will likely only produce some mid to upper level clouds.  

Note that the ECMMF (European) differs from the GFS model on how far north the moisture reaches over the next few days.  So we will keep the possibility of some snow showers in the discussion.  Either way, there isn’t much moisture to play with so only an inch or two can be expected.    

Forecast confidence: Good to fair due to the model discrepancy.  

Values from 4am today through

 4am tomorrow.

Precipitation: Today 24hr water: < .10 snow: trace Tomorrow’s 24hr water: .10  snow: 1-2 Trend and Timing:  A few light snow flurries will be possible today with mostly dry conditions persisting through the week.

Temperature: Low: 10   High: 22 Freezing level: Sea Level Trend and Timing:    Freezing levels will remain low.

Winds Base: 5-15 E Ridge Top: 5-20 Trend and Timing: Easterly flow will increase later today with gusty downslope winds blowing through the night.